Phonograph



R. H.YMANS0N. V

PHoNoGRAPH. APPLlCATlON FILED IAN. i3. 191'6.

1,419,938." Patentemezmszz.

UNITED ASTATES PATENT OFFICE.

RAY H. MANSON, OF ELYRIA, OHIO, ASSIGNOR TO THE GENERAL PHONOGRAPH MANU- FACTURING COMPANY, OF ELYRIA, OHIO, A CORPORATION OF OHIO.

PHONO GRAPH.

Application filed January 13, 1916.

To @ZZ whom t may cm2-cem:

Be it known that I, RAY H. Manson, a citizen oi the United States, residing at Elyria, in the county of Lorain and State of Ohio, have invented certain new and useful Improvements in Phonographs; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to phonographs, and

more particularly to` sound boxes and sound conducting arms, the objects oit'` my inven tion being to inrrease the elliciency of such. devices and to provide devices which can be more conveniently and cheaply made than those at present in use.

Other objects of my invention andthe inventionitself will probably be better understood trom a description of an embodimentof the invention.

Fig. 1 is a front elevation of an embodiment of my invention.

F ig. 2 is a plan view showing' the sound box in section. y

Referring now to the drawing and to the embodiment of my invention illustrated therein, at 10 is shown a cup whose bottom 11 is provided with `an opening 12 to which the sound arm 13 is connected. The

sides of the cup are shown at 14. ln the embodiment shown, the cup consists of a shallow, cylindrical body, which is preferably formed from a single piece of metal. This cup may be punched up. The rim of the cup is beveled, as shown at 15, preferably away from the interior of the cup,-

:tor a purpose to be described. The in terior of the cup is shown at 16. A flexible gasket 17 is placed inthe interior of the cup, preferably upon the bottom oi the same. This gasket may consist of a hollow rubber tube, as illustrated in the drawing, or of any other suitable form.

The sound diaphragm is shown at 18, which is placed in the cup on top of the gasket 17, and which extends over substantially the whole cross-sectional area of the cup. This diaphragm may be made of any suitable material. A second flexible gasket is shown at 19, which may be similar in construction to the gasket 17, and which is mounted in the cup on top of the diaphragm and around the edge of the cup. The front Specication of Letters Patent.

Patented June 2o, 1922. Serial No. 71,813.

of the cup is shown at 20. The bottom of the front isv shown' at 21, thev outer side wall at 22 and the inner side wall at 23. A collar 24 is provided, here shown as in'- tegral' with the outer wall of the cup; in fact, in the embodiment illustrated, it is shown as an extension of its outer wall.

lVhen the front is in position upon the cup, the collar 24 engages the side of the cup and holds the front in position. Tnthe form shown this is done by means of ifrictional engagement between the collar and the side ot the cup. A flange 25. is provided upon the inner wall 23 of the cup, preferably extending substantially at right angles from said wall, and engaging' the outer gasket 19, holding the gaskets and diaphragm in position. lt will be seen that by lieveling away the rim 15 of the cup, I provide means whereby the cup may be guided smoothly into position. At 26 is shown means for operating the diaphragm. This means consists of a stylus 27, a stylus support 28 and a stylus bar 29. The menteI bers 27, 28 and 29 are supported from the stylus frame 30, which consists of a base member 31, provided with a wing 32 to which the members 28 and 29 are connected. The stylus frame engages a pair of knifehearings 32 and is held in position in such bearings by springs 33 mounted upon screws T have illustrated this particular form oil stylus and stylus support, though it will be apparent that any suitable form may be employed.

The sound arm 13 is formed oit a plurality of longitudinal members 40 and 41, each of which may be stamped out, and each of which is provided with a ange, the member 40 with a flange 42 and the member 41 with a flange 43. When connected together, these lianges engage each other, sti'ening the sound arm, as well as maintainin asuitable connecting means therefor. ne end of the sound arm is provided with an elbow 50, which joins the sound box. The sound box and the members 40 and 41 are connectedk together preferably by a single member, such as a screw 51, which passes through both the members 40 and 41 into a threaded opening 58 in the sound box. The members 40 and 41 are expanded at theiry free ends, as shown at 60 and 61, the expansions taking in general substantially the Y shape of a portion of a globe. Through these expanded ends, the arm 13 is connected to a megaphone or resonator.

ldlhile l have shown this particular 'Forni and these details oit my invention for the purpose of being betterl able to describe the same, l do not Wish to be limited to such 'form and details, as 'it will be apparent that I may make many departures therevtrom and changes therein, without departing 'from the spirit oit' the invention.

1.. ln a talking' machine, the eoi'nbii'ration of a relatively heavy shallow circular cup having a perforation in the central part ot the bottom thereo'lf for the connection et a sound arm, a llexible gasket in the bottoni oli said cup adjacent the side thereot7 a vibratory diaphragm in said cup on said `gasket, a second 'flexible gasket similar in general to the `first gasket ion said dia phragm and within said. cup, the peripherai edges of the diaphragm being positioned between the gaskets, a Yfront for said cup consisting` ot' a ilat-bottomed annular meinber adapted to extend over the edge o l' the Cup, the outside Wall ol? the 'front beine' substantially perpendicular to the bottoni of the front and extending upwardlyY to 'form a collar adapted to 'lfrietionally ene/'age the outside of the side of said enp to hold the front in position on the cup, a flange on the inner Wall ot said liront substantiall);v at right angles to the Walls of: said 'trentl1 .said fia-nge extending over the Second named gasket engaginpv the same and re taining said diaphragm and gaskets in position, and the top edges ot the cup beveled av 'ay whereby said cup may be guided smoothly into position.

2.111. a talking machine the coinhiuation oil: a shallow cup, a diaphragm and a pair oit gaskets in said cup, a sheet metal lront for the cup eonsistiim` olf an annular member provided with a bottom. an inner ivall and an outer wall. the bottom being el snbstantially the same width as the edr'e ot the sides olf the ruin a collar integral with the liront on the outer wall et the lront adapted to engage the wup to retain the trent on said cup, and a llangre integral with the lront on the inner wall olI the troni to retain the diaphragm and gaskets in said cup.

3. ln a talkingr machine7 the combination ot a cup, a pair o'l.E `flexible gaskets' in said cup a vibratory diaphragm bet-nnen said gaskets, and a lfinnt ou said cup ronsisting ot;- an annular trough adapted to ilfrictionally engage the sides olf said rui. the extremity olli the inside wall ot said liront being bent at right angles to the other portion thereof, and adapted to engage one ot said gaskets.

ln witness whereof` l have signed Inj" name hereunto this 8th day et Januari'. 1916.

RAY H. MANSUN. 

